Vacuum



FIG. 1 is a side top perspective view of a vacuum showing my new design;

FIG. 2 is a rear bottom perspective view thereof;

FIG. 3 is a rear top perspective view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is right side elevation view thereof;

FIG. 7 is a left side elevation view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof. 

CLAIM The ornamental design for a vacuum, as shown and described. 